Lancia Delta HF 4WD & integrale

There is a separate page on the 2WD Delta.

Lancia Delta HF 4WD (1986) The first four-wheel-drive Delta was shown to the press at Fiats test track in 1981, with an initial public showing at the Turin Motorshow of the following year. This was an early development car, with a carburettor-fed, turbocharged 1600 twin-cam unit, a powerplant released for sale in the 2WD HF turbo in 1983.

It was some years later, in 1986, when the HF 4WD finally emerged as a production car. Now with a significantly redesigned 4WD system featuring a torsen rear differential and a centre diff with a viscous coupling, it also gained a significant power increase through the installation of a 2-litre injected and turbocharged engine (165bhp) adapted from that in the Thema. It was also easily recognisable from the outside, mainly thanks to the four round headlights replacing the two large rectangular units in the rest of the range, but also thanks to sideskirts and bonnet vents. Internally it gained new trim, colours and a revised dashboard.

1986 also saw the rather sudden and unpredicted demise of Group B as the highest level in rallying, leaving manufacturers looking for production models suitable for the new Group A regulations. For Lancia the choice was obvious, and this was to significantly change the history of the Delta. However, the new regulations Lancia Delta HF 4WD Group A on the 1987 Montecarlo Rally were only announced in May 1986, to take effect from January 1 1987, leaving little time for development.

Whilst production of the road car continued apace, in order to meet the 5,000 production requirement for homologation, development of the rally car raced ahead. Changes involved the suspension, brakes, transmission, strengthening the car and reducing the weight. The power from the engine was also increased, up from the production 165bhp to 260bhp. The HF4WD dominated the 1987 season, taking the WRC title for both drivers and constructors in both Group A and Group N, as well as winning the European Rally Championship. But the car was seriously limited in future development terms by various factors (wheel arch space, frontal air intake area and weight being the three most significant), and the decision was taken to introduce a road version (again requiring a minimum production run of 5,000) to address these.

Lancia Delta HF integrale (1987) The Frankfurt Motorshow of 1987 saw the public presentation of the result, the Delta HF integrale. Visually it was immediately recognisable by the flared wheelarches fitted to each corner, addressing the first concern as well as the new front bumper, designed also to complement the arches, which featured significantly more air intake area. The engine saw a new Garrett T3 turbocharger coupled with a larger intercooler and numerous modifications to the internals. The result was 185bhp, neccessitating improvements to the clutch and brakes whilst some changes were also made to the suspension to improve its robustness.

The competition car for 1988 thus overcame several of the 1987 cars deficiencies, but further changes in the regulations produced further limits. The arches allowed bigger wheels and tyres, as well as more suspension travel, whilst the air intakes allowed the new engine to run cooler. Power started the year around the 260bhp level (due to the new restrictions) but was up to about 280bhp as the season progressed. A six speed ZF gearbox was also homologated for use in 1988.

Lancia Delta HF integrale Group A on the 1988 1000 Lakes Rally The HF integrale only debuted in competition in Portugal (winning, of course), with the HF 4WD being used in the earlier events. This was due to the lack of enough production integrales to meet the 5,000 homologation requirement. The season went well, with Lancia winning 10 of the 11 rounds. Power was supposedly up to 290bhp on some events, the torque split had been tweaked up to 50:50 for some surfaces (previously up to 60:40 front:rear) and Lancia had announced it was developing both a two-pedal system with no clutch, and a four-wheel-steering system. A 16v engine was rumoured to be imminent.

The Geneva Motorshow of 1989 saw the public introduction of the 16v car, the Delta HF integrale 16v, with a press launch shortly afterwards in May. Visually differentiated only by the bulging bonnet (and the badging) it had a declared 200bhp in standard road trim. As well as the new 16v cylinder head, the engine had a range of improvements, from new connrods, improved valves and seats, new inlet and exhaust manifolds, to a new Garrett T3 turbo with overboost and an electronically controlled wastegate. Other novelties included ABS, modified Lancia Delta HF integrale 16v (1989) suspension, a new torque split of 47 front, 53 rear (previously the road cars had been 56 front, 44 rear) and new tyres. For certain markets (such as Switzerland) the new car was fitted with a low-emission 8v engine, producing 177bhp, all other improvements being made.

The four-valve-per-cylinder rally car had a declared 295bhp (under the nominal limit of 300bhp set by the FIA), larger brakes, a stronger propshaft and revised radiators, ignition and boost control. The 16v rally car also launched a new paint scheme, using a red base colour with jazzy Martini stripes, designed by Giugiaro. It did not last long ! The car debuted on the San Remo Rally in October (as soon as the 5,000th had been built !), which it won, also in the process winning the Championship title again. The same car also won the constructors championship in 1990. 1991 saw the car continuing, with an electronically controlled centre differential appearing on some events. Water-cooled front brakes and dampers were also seen. The championship was again won by the all -dominating integrale.

Lancia Delta HF integrale 16v Group A in its short lived red livery The road car had seen little change since its launch back in 1989, but late 1991 saw the next version, officially the Delta HF integrale, shown to the world. Unofficially it was commonly referred to as the 'evoluzione' or just Evo. Later (with hindsight) it became known as the Evo 1. Numerous significant changes were made to almost all parts of the car. Visually, even bigger arches covered each of the wheels, whilst a larger bulge in the bonnet was flanked by two additional vents. New light clusters and sideskirts were less obvious than the addition of a tailgate spoiler, whilst closer inspection would reveal a move to five-stud wheels instead of the previous four. Various other detail changes were made to the outside and cockpit. Mechanically the car had an increased track both at the front and the rear, the front suspension was revised, including a new anti-roll bar and new arms, the brakes (new four pot callipers at the front, new discs all round and a new servo unit), exhaust and wheels were all improved (generally larger !) and a new power steering system, incorporating an oil-cooler, was adopted. The engine had a declared 210bhp, thanks to the exhaust changes and some management improvements.

Lancia Delta HF integrale 16v [Evo 2](1993) At the end of 1991 Lancia officially withdrew from rallying. The new cars and all spares were officially handed to Martini, who contracted Jolly Club to run the cars in the 1992 season. The factory continued limited support and development. Despite these changes, again, the new integrale won on its debut, the Monte Carlo rally, and went on to win the championship, but in October Lancia officially withdrew from motorsport entirely, donating all integrale related equipment to the Jolly Club team. Martini left with the factory, and in 1993 the Jolly Club attempted to run a full championship. Luck evaded them and the competition overtook the now ageing cars, lacking development and backing. The integrale continued to be campaigned on many a regional event for several years before the homologation expired in 2000.

Around the same time, production of the road cars, which had always been at the Chivasso plant, changed hands. Part of the factory (which was otherwise pretty much redundant) was sold to Maggiora who continued to produce the cars, with painting done by Bertone. Maggiora also continued development of the car, and in 1993 introduced a final version, generally known as the Evo 2, although no change in official nomination was made, still being the Delta HF integrale. Lancia Delta HF integrale 16v [Evo] Group A The most significant modification was the addition of a three-way cataytic converter, combined with a new water-cooled turbo, revised engine management and injection systems and a red camshaft cover. Aircon became standard, the seats changed, 16 inch wheels were fitted, and a new steering wheel was used. Production finally ceased at the end of 1994.

During the years of production, many limited editions were made, and various markets attached various badges to various versions. Often these used colours to distinguish them. In 1992 a series of yellow cars, the 'Gialla' were produced, in 1994 green was the theme with the 'Verde York' (or 'World Rally Champions') special series. The 'Blue Lagos' also emerged in 1994, whilst much smaller numbers were built of the 'Club Italia' (all dark blue) in 1992, the 'Dealers Collection' (all red) in 1994, the 'Bianca Perlata' (all pearl white) as well as the 'HiFi', 'Lancia Club' and 'Final Edition', the latter all being for the Japanese market. Celebrating the rally successes of the car were the 'Martini 5' series at the end of 1991 and the 'Martini 6' a year later.

Various one-offs were produced, including a cabriolet for the Agnelli family and the 'HIT' concept car. A limited run of about 25 of the Hyena, a composite bodied Evo 2 designed by Zagato, were built in Holland.

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Technical Details
Driveline transverse engine at front with permanent four wheel drive
Free front differential (HF 4WD unit)
Centre differential incorporating viscous coupling
Rear torsen differential (HF 4WD unit)
Engines HF 4WD : 1995cc (84x90mm) dohc 8v turbocharged & intercooled 4 cyl with 165bhp @ 5,250rpm
HF integrale (1987) :1995cc (84x90mm) dohc 8v turbocharged & intercooled 4 cyl with 185bhp @ 5,300rpm
HF integrale 16v (1989) : 1995cc (84x90mm) dohc 16v turbocharged & intercooled 4 cyl with 200bhp @ 5,500rpm
HF integrale [Evo] (1991) : 1995cc (84x90mm) dohc 16v turbocharged & intercooled 4 cyl with 210bhp @ 5,750rpm
HF integrale [Evo 2] (1993) : 1995cc (84x90mm) dohc 16v turbocharged & intercooled 4 cyl with 215bhp @ 5,750rpm
Suspension front : MacPherson strut with telescopic dampers and coil springs plus anti-roll bar
rear : MacPherson with telescopic dampers and coil springs, located by twin transverse and single trailing links
See the HF 4WD suspension.
See the integrale [Evo] front and rear suspension.
wheelbase : 2480mm
track (front/rear) :
HF 4WD : 1409mm/1404mm
8v integrale : 1426mm/1406mm
16v integrale : 1448mm/1440mm
16v integrale [Evo] : 1502mm/1500mm
16v integrale [Evo 2] : 1516mm/1504mm
Brakes front : ventilated discs (HF 4WD 257mm)(integrale 284mm)(Evo 281mm)
rear : discs (HF 4WD, 8v, 16v 227mm)(Evo 251mm)
handbrake operating the rear callipers via cable
dual hydraulic circuit with servo assistance
ABS on some models
Transmission 5 speed manual gearbox
HF 4WD & 8v torque split : front 56%, rear 44%
integrale 16v & Evo : front 47%, rear 53%
Steering Rack and pinion with servo assistance
Kerb weight HF 4WD : 1190kg (60.5% front, 39.5% rear)
integrale 8v : 1200kg (63% front, 37% rear)
integrale 16v : 1250kg (62.4% front, 37.6% rear)
[Evo] : 1300kg (62.4% front, 37.6% rear)
[Evo 2] : 1340kg (63.3% front, 36.7% rear)
Dimensions HF 4WD.
HF integrale.
HF integrale 16v.
HF integrale [Evo 1].
HF integral [Evo 2].

HF 4WD cutaway drawings : road car, Group A rally car

integrale cutaway drawings : 8v road car, 16v Group A rally car

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Lancia Delta integrale - click for larger image Lancia Delta integrale - click for larger image Lancia Delta integrale - click for larger image Lancia Delta integrale - click for larger image

model max speed 0-100km/h standing km
HF4WD (1986) 208 km/h 7.8 sec 28.5 sec
HF integrale (1987) 215 km/h 6.6 sec 27.1 sec
HF integrale 16v (1989) 220 km/h 5.7 sec 26.1 sec
HF integrale [Evo] (1991) 220 km/h 5.7 sec 26.1 sec
HF integrale [Evo 2] (1993) 220 km/h 5.7 sec 26.1 sec

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Buying / Selling

The evolution of the shape, HF 4WD to Evo 2, left to right All the normal things to check before buying (or things to do before selling) an integrale apply (see our Delta page for suggestions), but given the vehicle there are some specifics also needing careful checking.

Firstly, given the performance (and hard life some of these cars have had) it is essential to check for accident damage. Check that there are no mismatching panels, large areas of discolouration or signs of fresh paint. Look closely for signs of cracking or distortion where the pillars meet the roof, around the sunroof and around the tops of the door openings. There should be a colour code sticker on the underside of the bonnet and some original stickers on the front cross-panel. Check for corrosion around the sunroof (caused by blocked drain channels), the inner wings on older cars and around the hinges of the hatch. If possible check where the front anti-roll bar mounts are fixed to the floor, these can fail.

On the Evo 1 and 2 cars, the front anti-roll bar drop links are a weakpoint, and can cause a tapping noise under the floor of the car as you drive it. Similarly, the suspension bushes (which will again cause a clunking on driving) also have a short lifespan. Also check the front flexible brake pipes for damage or cracking, the exhaust (especially the back box) for corrosion.

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Lancia Delta integrale Books : buy them online here (in association with Amazon)
Buy this book online now. Lancia Delta Integrale
Peter Collins, 2003
Buy this book online now. Lancia Delta & Integrale ultimate portfolio 2001
Buy this book online now. Lancia Delta HF Integrale
W Blaettel & G Wagner, 2007

For more books Lancia's, see our Online Bookstore

integrale comment form

Lancia Delta HF integrale on the 1992 Argentina Rally Please send your comments on the integrale (and HF 4WD), these will be added to this page for future visitors to read.
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Lancia Delta HF integrale [Evo 1]

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